.box3 {
    padding: 50px 50px;
}

.box4 li {
    margin-bottom: 10px;
    /*border: 1px solid #666;*/
}

.cfpwd,.email,.code,.register {
    display: block;
    width: 250px;
    height: 40px;
    border: 1px solid #666;
    padding-left: 10px;
}

.box4 li:nth-child(1) {
    margin-top: 0;
}

.box4 li:nth-child(4) {
    position: relative;
}

.button2 {
    position: absolute;
    top: 5px;
    right: 25px;
    display: inline-block;
    padding: 0 10px;
    height: 40px;
    font-size: 12px;
    border: 1px solid #666;
}

.button2:hover,.register:hover {
    background-color: #00e1ff;
    color: #fff;
}

.code {
    margin-left: 10px;
}

.register {
    padding-left: 0;
}